File:Dc five 1.svg|thumb|150px |The five levels of DEFCON
The '''defense readiness condition''' ('''DEFCON''') is an alert state
used by the United States Armed Forces
[ (DEFCON is not mentioned in the 2010 and newer document)]
The DEFCON system was developed by the Joint Chiefs of Staff
(JCS) and Unified Combatant Command|unified and specified combatant commands
It prescribes five graduated levels of readiness (or states of alert) for the U.S. military, and increase in severity from DEFCON 5 (least severe) to DEFCON 1 (most severe) to match varying military situations.
DEFCONs are a subsystem of a series of Alert Conditions, or LERTCON
s, that also includes EMERGCON|Emergency Conditions
There is no single DEFCON status for the country, and in fact...